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Coupling Problem: Out of memory during LU factorization

Posted 2011年4月7日 GMT-4 03:36 Modeling Tools & Definitions, Parameters, Variables, & Functions, Studies & Solvers Version 5.0 2 Replies

DEBASHIS MAJI
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Hi,
I am trying to couple joules heating with laminar flow in 3D geometry using COMSOL 4.1 (64 bit win XP OS). However I am getting the following error while solving:

Failed to find a solution.
Out of memory during LU factorization.
Returned solution has not converged.

Does the solver setting need to changed? I shall be highly obliged if anyone can kindly help.

Thanks and regards,
Debashis
2 Replies Last Post 2015年1月3日 GMT-5 03:59
Kai Herbrig
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Posted: 1 decade ago 2011年4月7日 GMT-4 04:35
Hi,

www.comsol.de/community/forums/general/search/?s=Out+of+memory+during+LU+factorization
Hi, http://www.comsol.de/community/forums/general/search/?s=Out+of+memory+during+LU+factorization
Vahid Moss
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Posted: 10 years ago 2015年1月3日 GMT-5 03:59
I must do some calculations with the results of an eigenvalue PDE. E.g. add two eigenvectors (in 2D) to each other or get the "exp" of the eigenvalues. Although I can see and select different eigenvalues, but I don't know, how to ask COMSOL to give me second or third ... eigenvalue or eigenvectors for some post processing.
Is there any simple way to put label to each of eigenvalues or eigenvectors?
I must do some calculations with the results of an eigenvalue PDE. E.g. add two eigenvectors (in 2D) to each other or get the "exp" of the eigenvalues. Although I can see and select different eigenvalues, but I don't know, how to ask COMSOL to give me second or third ... eigenvalue or eigenvectors for some post processing. Is there any simple way to put label to each of eigenvalues or eigenvectors?

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